请高手进来翻译一段文字（中译英，谢绝不负责任的工具翻译，追加分）急求

（纯人工，放心使用吧。不要忘了多加分，嘻嘻。）

Abstract
Zinc is the constituent or activating factor of many enzymes ,proteins and riboses by poultries,to involve in the cellular immunity and humoral immunity to maintain the structure and function of the central immuneorgan and peripheral immuneorgan 。Zinc have important effect on the cellular immunity ,especially the growth ,development and maturity of thymus cell,and is the one of necessary elements .Appropriate amount of zinc can significantly enhance the growth of immune organs, humoral immunity and cellular immunity ,and to affect the immune resistance for disease. In this paper,it summarize the effect of immune function by zinc .

Key words: zinc poultries immune function

Abstract: Zinc is the body of poultry in many enzymes, proteins, ribosomes, etc., or composition of the activation factor, involved in DNA, RNA, protein, carbohydrate metabolism of lipids involved in cell-mediated immunity and humoral immunity, the maintenance of the central immune organs and poultry peripheral immune organs of the structure and function. Zinc for the immune cells, especially thymocytes of growth, development, maturity plays an important role, it is one of the essential elements of poultry. Appropriate amount of zinc can significantly enhance the growth of immune organs, humoral immunity and cellular immunity, thus affecting the immune resistance to disease in poultry. This article in the zinc on the immune function of birds in this area were reviewed.
Key words: zinc in poultry immune function

你好,翻译如下 希望能帮助你

Abstract: Zinc is the body of poultry in many enzymes, proteins, ribosomes, etc., or composition of the activation factor, involved in DNA, RNA, protein, carbohydrate metabolism of lipids involved in cell-mediated immunity and humeral immunity, the maintenance of the central immune organs and poultry peripheral immune organs of the structure and function. Zinc for the immune cells, especially lymphocytes of growth, development, maturity plays an important role, it is one of the essential elements of poultry. Appropriate amount of zinc can significantly enhance the growth of immune organs, humeral immunity and cellular immunity, thus affecting the immune resistance to disease in poultry. This article in the zinc on the immune function of birds in this area were reviewed.

123楼的实在太没公德心了,连key word 都机器翻出来！！！